But we have a pretty limited budget and a short time frame to get it done. Here is how it went, (still uploading the video to youtube as i write this). Sadly the video is not as good as i hoped, the wind had picked back up, so its loud, and very jiggly.
I didn't know at the time of planning this that there was a contest about launching things (does it hurt your chances to mention a contest in an entry??) I found the contest when making my mini instructable on making "LED Flyies" But I did stay up the night after our big event to write this up and post if because the deadline is 11pm tomorrow!
Video of the flight and some still photos can be seen on the last page of this Instructible!
Step 1: The Parts
1 Tank of helium ( was able to borrow my dad's otherwise rent one. the disposable tanks are overpriced)
1 6"x6" square of foam-core board.
1 spy pen video camera. $30
1 Kite reel (i had one already, but they go for about $4)
1 postcard $0.25 and $0.29 stamp
1 ziploc bag.
1 Dollar bill (prize)
1 sticker prize.
Tape, used both scotch and 3m double sided sticky tape